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March Weather in Princeton, United States

Last updated: June 24, 2025

In Princeton, United States, the average temperature in March hovers around 1°C (34°F). Expect a wide range of temperatures, with minimums plummeting to -25°C (-12°F) and maximums peaking at 20°C (68°F). While you're there, be prepared for about 60 mm (2.4 in) of precipitation over 9 days, and enjoy an average humidity level of 85%, contributing to the region's distinctive atmosphere.

March Temperature in Princeton

In March in Princeton, the average temperature is 1°C (34°F). The maximum can reach 20°C (68°F), and the minimum can be as low as -25°C (-12°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

March Weather in Princeton: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Princeton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Princeton, March typically has an average temperature of 1°C (34°F), with highs reaching up to 20°C (68°F) and lows dropping to around -25°C (-12°F).
JanFebMarAprMayJunJulAugSepOctNovDec202134445869747064503628
Data source: Temperature data for Princeton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Princeton

In Princeton in March, the total precipitation amount is 60 mm (2.4 in), occurring over a span of 9 days.

March Precipitation Trends in Princeton

The chart displays monthly precipitation patterns in Princeton, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Princeton, March typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec46506099117108109100891054648
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Princeton

In Princeton in March, humidity is 85%. With an average temperature of 1°C (34°F), this humidity feels like a biting chill that seeps into your bones, making outdoor travel uncomfortable and urging you to seek warmth indoors rather than explore the surroundings.

March Average Humidity in Princeton

This chart illustrates the average monthly humidity levels in Princeton, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Princeton is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Princeton

In Princeton in March, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Princeton.

Maximum UV Index Levels in Princeton for March

The chart shows the monthly maximum UV Index (UVI) for Princeton in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Princeton typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Princeton March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How March Weather in Princeton Compares to Other Months

Weather in Princeton varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Princeton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Princeton, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)46 mm (1.8 inches)85%moderate
February Weather-6°C (21°F)50 mm (2.0 inches)85%moderate
March Weather1°C (34°F)60 mm (2.4 inches)85%moderate
April Weather7°C (45°F)99 mm (3.9 inches)85%very high
May Weather15°C (59°F)117 mm (4.6 inches)78%very high
June Weather21°C (70°F)108 mm (4.3 inches)80%very high
July Weather23°C (74°F)109 mm (4.3 inches)78%very high
August Weather21°C (71°F)100 mm (3.9 inches)76%very high
September Weather18°C (64°F)89 mm (3.5 inches)79%high
October Weather10°C (51°F)105 mm (4.1 inches)83%moderate
November Weather2°C (36°F)46 mm (1.8 inches)88%moderate
December Weather-2°C (28°F)48 mm (1.9 inches)81%low

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